In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.
Scopus Subject Areas
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal
- Food waste
- Oleaginous yeast
- Volatile fatty acids